-carrying member of theaarp.ronaldreaganwas69 when he first ran for president. many worried he was too old for the job until his famous quip during a debate. >> i will not make age an issue of this campaign. i am not going to exploit, for political purposes, my opponent's youth and inexperience. >> yes, reagan used age to his advantage. but seriously, how old is too old? remember senator strom thurman who commuted from walter reed to the capitol at the age of 100? his aides had to vote for him. of course, this argument isn't limited to the world of politics. ageism rages in the role world, too. how often have you heard those under 30 grumbling about those old guys sucking up all the jobs? so the talk back question of the day, should politicians have a mandatory retirement age? facebook.com/carolcnn. your responses later this hour. still the most dependable, longest-lasting full-size pickups on the road. and now we've also been recognized for lowest total cost of ownership -- based on important things, like depreciation, fuel, and maintenance costs. and now trade up to get a 2012 chevy silv